private static RuleBase createKnowledgeBase() throws Exception {
PackageBuilder builder = new PackageBuilder();
Reader source = new InputStreamReader(
RuleFlowTest.class.getResourceAsStream("/FileFinder.rf"));
builder.addProcessFromXml(source);
Package pkg = builder.getPackage();
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(pkg);
return ruleBase;
}